21. Some sources may treat the terms " rhythm method " and " natural family planning " as synonymous. 22. The pocket-sized electronic device can be programmed to " eliminate the guesswork inherent to the rhythm method ." 23. She includes information on several natural family-planning methods that are more effective than the " rhythm method ." 24. Violet Janin feared she would die in childbirth and had relied on the unreliable rhythm method of birth control. 25. Lancaster is also the founding home of the dance-music sound systems The Rhythm Method and The ACME Bass Company. 26. When Cauchi returned, the Del-Satins merged with The Rhythm Method from Long Island in 1968 to form Brooklyn Bridge. 27. For these women, the rhythm method formula incorrectly identifies a few fertile days as being in the infertile period. 28. Because a woman's menstrual cycle becomes less regular during perimenopause, it is harder to use the rhythm method , Mastroianni said. 29. So she did a little research of her own and wrote out by hand a small pamphlet explaining the rhythm method . 30. But the all-male, celibate priesthood remained, as did teachings that the only acceptable means of family planning was the rhythm method .
